Someone has drawn that egg before and I remember proko answered that the egg on that picture has a complex lighting. Better draw the egg from this picture if you want to shade an egg in this project.

This is a good start. I would like to add a little advice. The reflective/bounce light should not be lighter than anything in the light. It is still part of the shadow. The one reference photo for the egg standing up seems to have multiple light sources which is not idea especially if you’re a beginner.

You did pretty good handling your edges, but the shadow values are not nearly as dark as in the reference. This egg has complex lighting on it. If this is one of your first attempts at shading I recommend something more clear and direct with a single source. Try this egg:

for feedback on something like value scales pictures have to be taken with better lighting.. the upper left side of your pages is lit up while the bottom right is in shadow affecting all of your work on the page